[llvm] [openmp] [clang] [OpenMP] Remove `register_requires` global constructor (PR #80460)

[Joseph Huber via cfe-commits]

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@@ -199,7 +199,7 @@ static int initLibrary(DeviceTy &Device) {
                                         Entry.size) != OFFLOAD_SUCCESS)
               REPORT("Failed to write symbol for USM %s\n", Entry.name);
           }
-        } else {
+        } else if (Entry.addr) {
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jhuber6 wrote:

If the address is not-null, then it's a kernel waiting to be registered. It's a little hacky but in the current construction a kernel will always have a stub address pass in by the compiler. So one of these "requires" entries will have the addr be nullptr and the size be zero.

https://github.com/llvm/llvm-project/pull/80460